Prang Vinyl White Block Erasers, Large, Box of 12 Erasers, White (39702) Large erasers - 2.375 x 0.875 x 0.5 inches No messy residue - Leaves clear, smudge-free surfaces Works on paper, mylar, and other drawing and writing surfaces Great for both home and office use Earn free supplies - Visit the Prang Power website for program information